Wood-chipping machine.



G. M. PELTON.

WOOD GHIPPING MACHINE.

G. M. PELTON.

WOOD GHIPPING MACHINE.

APPLICATION FILED JAN. 3, 1911.

1,1 14,031 Patented oct. 2o, 1914.A

2 SHEETS-SHEET 2.

' lll/111111111111111 Wm mm l 9b 7%. @m

UNITED STATES FATENT OFFICE.

GEORGE M. PELTON, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE FILER 6c STOWELL COMPANY, 0F MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

WOOD-CHIPPING MACHINE.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed January 3, 1911. Serial No. 600,401.

To all whom it may concern.'

Be it known that I, GEORGE PnLToN, a citizen of the United States, residing at M11- vwaukee, in the county of Milwaukee and scribed and pointed out in the claims.

In the accompanying drawing like characters designate the same parts in the several figures. 2 A

Figure l is a side elevation of a machine embodying the invention; Fig. 2 is a plan view of the same; Fig. 3 is a vertical longitudinal section thereof on the line 3 3, Fig. 4; Fig. 4 is a transverse vertical section onr the line 4 l, Fig. 3; Fig. 5 is a longitudinal section on the line 5 5, Fig. 3, of a portion`x ofthe upper part of the case andof the main knives attached thereto; Fig. 6 a sectional detail on the line 6 6, Fig. 3, showing a portion of the rotary cutter head `and one of its knives; and Fig. Z is a section on the line 7 7, Fig. 3, showing a guard at one side of" the feed opening and adjacent portions of the case and cutter head.

The case of the machine is composed'vof a boxlike base a, of substantially quadrangular form, outwardly flanged and open at the top and bottom and of two approximately quarter cylindrical sections and 0,. outwardly flanged around their edges and fitted together and to the base on which they are mounted. The base isformed or provided on opposite sides with boxes d, in which the shaft e of a rotary cutterihead fis mounted and held. against endwise play -by collars g, shown in Fig. 4. The cutter head is composed of two truncated conical sections bolted together and keyed on the shaft e, as shown in Figs. 3 and 4. The inwardly converging faces or walls of the cutter head are lformed with radially disposed staggeredI openings l1., in which knives z' are fitted and adjustably. fastened by bolts j, as shown in Figs. 4 and 6.

The section 7)- of the case, which is permanently bolted to the base a, is formed i'n the upper part thereof with a feed opening surrounded by an upwardly or outwardly projecting flange lo for the connection therewith of a feed spout (not shown) and side guards Z. Below this feed opening the peripheral wall of section b is made of V- shape in cross section, as shown in Figs. 2 and 3, to conform with the conical faces of the cutter head and close the space between them and the case, the upper wall m of this inwardly projecting partof the section forming a continuation of the flange 7c on the lower side of the feed opening, and. serv ing to prevent pieces of wood as they are fed to the machinel from dropping into the lower part of the case before they lare reduced to chips by the rotaryv critter head.

The guards 1, as shown in Figs. 3 and 7, have inner curved and beveled edges which extend inwardly linto close proximity with the conical faces of the cutter head f adjacent to and within their outer margins, and prevent splinter-s or pieces of wood from escaping between the sides of the cutter head and the sides of the case without being subjected to the action of the knives.

Section c, which is similar in general shape to the feed section Z) of the case, is formed in the upper part thereof with inwardly converging knife seats or supports n, approximately tangent to the conical faces the cutter head f, as shown in Figs. 2, 3, and'5. These seats or supports terminate along' their outer edges with inwardly offset shoulders or walls 0, in which adjusting screws 79 are threaded. To the inner faces of the seats or supports ,n are adjustably fastened knives y, byv bolts r passing through countersunk holes in the knives and transversely slotted openings in the vseats or supports n and provided on their auxiliary knife t, which is shaped to correspond with the converging-faces of the cutter head f and is adjustably fastened to said seat by bolts u passing upwardly through vcountersunk holes in said knife and slotted openings in the seat, and provided at their upper exposed ends with nuts, as shown in Fig. 3. The converging cutting edges of the kni e t are thus disposed radially with respect to the radial cutter head,or slightly above and parallelwith 'its horizontal diameter, while the converging cutting edges of the knives are set obliquely to the vertical dia-meter of the cutter head s oas to produce a shearing cut with the knives The knife t serves 'to reduce to chips any splinters or fragments of wood whchmay. pass the knives g.'

Section c is detachably fastened to lthe base a and section b by'eye-bolts zr-pivoted between lugs or ears cast on the base a and section b, and provided with nuts which are adapted to be swung into and out of. place 1 for engagement with forked or cleft lugs *ul f cast on section c. Section o is connected at the sides with the base a by links m, and at l the end by a stop rod y, which is pivoted to the end of the base 'and passes loosely through a lug .e on the end of section c. The' stop rod is provided on its upper end projecting normally above the lug e, with a collar or nuts 2, and section 0 is provided on the sides with lugs 3, which by engagementwith the links w coperate with the stop rod y and lug a to hold-section c when removed' from the case, in convenient position asv 1ndicated by dotted lines on'Fig. l` for removh 1 ing, replacing and adjusting the knives g and t and for gaining access to the knives i of the cutter head f, which are adjusted by gage to run close to the cutting edges of the knives g and t. .The shaft e of the cutter head is provided at one end outside of the case with a pulley or other means (not shown) for driving it. "Y

In the operation of the machine, the cutterhead f being rotated in the direction indicated by the arrow on Fig. 3, waste lumber is conducted through the feed spout into the upper part of the machine between the converging faces of the cutter` head and between' the inclined wall m on the lower side of the feed opening and the opposite wall, connecting the seats n onthe upper side of lsaid opening. .'Ihe knives i of the cutter headI carrying tlie.pieces of wood fer-ward against the stationary knives g, coperate therewith to successively shear chips from the exposed sldes ofthe pieces until they are completely cut into pieces, the chips'pa'ssing outwardly 2 through the openings It in the cutter head and falling into the base, from whichjethey are discharged through an opening or open- Aings in thefloor. Any splinters or fragments ywhich may escape past the knives q are caught by the auxiliary knife t and removing, sharpening and replacing or adjusting or renewing the knives z', g 'and t. In removing and replacing said section it is prevented from tipping inward beyond a certain limit by the engagement of the lu z with the nuts or shoulder 2 on the pivote stopvrod y, as indicated by dotted lines,

Fig. 1.

I claim:

1. In a wood chipping machine the combination of a rotary cutter head having inwardly converging conical faces andprovided with knives, a case in which said cutter head is mounted having a section formed with inwardly converging knife seats in planes approximately tangent to the conical faces of the cutter head, stationary knives removably attached to said converging seats and adapted to coperate with the knives of the rotary cutter head, and a V- shaped knife removably attached to the case in a plane approximately radial tothe cutter head and adaptedto cooperate with the knives of the cutter head to reduce to chips fragments of wood escaping the other stille-* `\versely elongated bolt-holes, knives fitted to said seats, bolts passing through said knives and the holes in. said seats and provided at their outer exposed ends with nuts for adljustably 'securlng the knives to their seats, adjusting screws threaded in said offset walls and bearing at their inner ends against the outer edges of the knives, said' adjusting screws and vthe nuts on said bolts being ac cessible outside ofthe knifesupporting secd tion of the case, and a rotary cutter head mounted in said case and provided with knives arranged to coperate with the other knives. i

3. In a wood chipping machine the combination of a rotary cutter head having inwardly .converging conical faces and provided with knives, a'case. in which said cutter head is mounted having a removable section formed with inwardly converging knife seats in planes approximately tangent to the conical faces of the cutter head, and on its lower side another knife seat approximately radial to the/cutter head. and perpendicular In Witness whereof I hereunto aiix my/ to its conical faces,' and knives attached to signature in presence of two Witnesses. said converging seats and a V-shaped knife attached to saidqadial seat and adapted to GEORGE M PELTON coperate with the knives of the cutter head Witnesses: to reduce to chips any splinters or. fragments L. Goss,

escaping the other stationary knives. Amon E. Goss. 

